venticool

Welcome to venticool!

venticool is the international ventilative cooling platform launched in October 2012 to accelerate the uptake of ventilative cooling  by raising awareness, sharing experience and steering research and development efforts in the field of ventilative cooling. In 2020, venticool decided to broaden its scope towards resilient ventilative cooling.

The platform supports better guidance for the appropriate implementation of resilient ventilative cooling strategies as well as adequate credit for such strategies in building regulations.

The platform philosophy is to pull resources together and to avoid duplicating efforts to maximize the impact of existing and new initiatives. venticool joins forces with international projects (in particular IEA EBC annexes 62 (ventilative cooling) and, more recently, annex 80 (Resilient cooling for buildings)) and organizations with significant experience and/or well identified in the field of ventilation and thermal comfort like AIVC (www.aivc.org) and REHVA (www.rehva.eu).

The platform has been initiated by INIVE EEIG with (International Network for Information on Ventilation and Energy Performance) with the financial and/or technical support of its partners.

Ventilative cooling as part of a resilient cooling strategy

Ventilative cooling (VC) is a key element in a strategy for sustainable summer comfort. However, its effectiveness is very low if not combined with a good overall building design and solar control. Furthermore, studies on the performance of existing low energy cooling systems (like VC) concluded that even with current satisfactory performance, these technologies fail to function adequately in the extraordinary scenarios or shocks (e.g. high occupancy, power failure, high humidity production, pandemics etc. ). A generally agreed definition of ‘resilient cooling’ is not yet available but the following description gives a good indication of the resilience of a building as “an ability of the building to withstand disruptions caused by extreme weather events, man-made disasters, power failure, change in use and atypical conditions; and to maintain capacity to adapt, learn and transform“.

In line with the scope of IEA EBC annex 80 Resilient Cooling of Buildings, the venticool platform has broadened its field of attention to  resilient ventilative cooling strategies.

Ventilative cooling in energy performance regulations and standards

Because of their increasing weight on building design options, energy performance regulations are undoubtedly key market drivers. This is a specific concern for ventilative cooling strategies as they require rather mature assessment methods for thermal comfort and ventilation losses to be correctly accounted for.

Annex 62  has pointed out limitations with CEN standards (EN 15242, EN 15241, EN 15251, EN 13779) and national regulations as e.g. used in energy performance regulations which are detrimental to ventilative cooling.

These include the poor handling of usage profiles and control strategies, in other words, assumptions on by how much and when the airflow rates are increased to meet acceptable thermal comfort conditions.

In fact, adequate credit for ventilative cooling should account for thermal comfort criteria as well as ideally, indoor air quality, visual comfort, and noise. It should reflect the effective cooling potential which greatly varies within a single day, calling for rather sophisticated calculations seldom used in regulations. The good news is that CEN and ISO have ongoing activities for a better assessment of ventilative cooling.

The regulatory implementation of ventilative cooling strategies differs from country to country and therefore attention to the national approaches also falls within the scope of venticool.

Favorite Energy Efficiency and Indoor Climate in Buildings is out! Edition of October 2020

The October 2020 issue of the “Energy Efficiency and Indoor Climate in Buildings” newsletter has just been released. This monthly online newspaper contains relevant information on the Air Infiltration and Ventilation Centre (AIVC), the building and ductwork airtightness platform (TightVent Europe), the platform for resilient ventilative cooling (venticool), the Dynastee network, the Indoor Environmental Quality – Global Alliance (IEQ-GA) & EU relevant information. The paper is available at the first week of every month at: http://news.inive.org/

We would like to encourage you to subscribe to get informed on a regular basis on our platforms’ activities.

Favorite New release! venticool newsletter issue #16 – July 2020

The 16th issue of the venticool newsletter is now available! Specific contents include:

  • Foreword
  • Postponement of 41st AIVC ‐ ASHRAE IAQ ‐ 9th TightVent & 7th venticool joint conference in Athens, Greece
  • IEA EBC Annex 80 Resilient Cooling for Buildings – Proceedings from the 2nd Expert Meeting
  • Selected papers from the AIVC – TightVent‐ venticool 2019 Conference published at the April 2020 edition of the REHVA Journal
  • The REHVA & IEQ‐GA Covid‐19 taskforces
  • Recordings & Slides from the webinar on Ventilative Cooling Design and Examples
  • AIVC Literature List 34 on “Ventilative Cooling”
  • IEA EBC annex 86 “Energy Efficient Smart IAQ Management for residential buildings”

To download the newsletter please visit: https://venticool.eu/venticool-publications/newsletters/

Favorite Selected papers from the AIVC – TightVent- venticool 2019 Conference published at the April 2020 edition of the REHVA Journal

The April 2020 edition of the REHVA Journal has been released, including a selection of articles presented at the 40th AIVC – 8th TightVent & 6th venticool Conference, 2019 “From energy crisis to sustainable indoor climate – 40 years of AIVC” held in Ghent, Belgium on 15-16 October, 2019.

Specific articles include:

  • Real-life ventilation filter performance in a city environment | Joris Van Herreweghe (BBRI, BE), Samuel Caillou (BBRI, BE), Tom Haerinck (BBRI, BE), Johan Van Dessel (BBRI, BE)
  • Particle filtration in energy efficient housing with MVHR | Gabriel Rojas (Salzburg University of Applied Sciences, Austria)
  • Cloud based large-scale performance analysis of a smart residential MEV system | Bavo De Maré (Renson Ventilation, BE), Stijn Germonpré (Renson Ventilation, BE), Jelle Laverge (Ghent University, BE), Frederik Losfeld (Renson Ventilation, BE), Ivan Pollet (Renson Ventilation, BE), Steven Vandekerckhove (Renson Ventilation & KU Leuven, BE)
  • Assessment of mid-term and long-term building airtightness durability | Bassam Moujalled (Cerema, FR), Sylvain Berthault (Cerema, FR), Andrés Litvak (Cerema, FR), Valérie Leprince (PLEIAQ, FR), Gilles Frances (Cetii, FR)
  • New findings on measurements of very airtight buildings | Stefanie Rolfsmeier (BlowerDoor GmbH, DE)
  • Influence of horizontal mounted flue gas exhaust systems on indoor air quality | Xavier Kuborn (BBRI, BE), Sébastien Pecceu (BBRI, BE)

To download and read the full journal please visit: https://www.rehva.eu//rehva-journal/detail/02-2020

Favorite [Changes due to COVID-19] 6-13-19 May 2020, AIVC Workshop, Urban Home Ventilation

[COVID-19 update] Due to the restrictions related to COVID-19, the organizers have decided to replace the AIVC 2020 workshop physical event by 3 webinars to be held on:

  1. Wednesday May 6th, 2020 at 15:00-16:30 (CET)
  2. Wednesday May 13th, 2020 at 15:00-16:30 (CET)
  3. Tuesday May 19th, 2020 at 15:00-16:30 (CET)

Setting sustainable urban development goals and developing energy efficient solutions for buildings are crucial elements of climate action. Urban living is introducing new challenges both for architectural design and technical solutions. Ventilation systems have an important impact both on energy use as well as indoor climate and health in buildings. So, how can we develop good home ventilation solutions fit for urban living?

The Air Infiltration and Ventilation Centre (AIVC) together with the Oslo Metropolitan University (OsloMet) and SINTEF Community are organizing 3 webinars to provide insights from national and international experiences in the field.

For further information on registration, detailed programme etc. please visit the AIVC website at: https://www.aivc.org/event/changes-due-covid-19-6-13-19-may-2020-aivc-workshop-urban-home-ventilation

Favorite Save the date for the AIVC 2020 Workshop “Urban Home Ventilation” – 6 May 2020

Mark your calendars for the upcoming AIVC 2020 International Workshop “Urban Home Ventilation”  to be held on May 6th, 2020  in Oslo, Norway! The workshop will start at 08:30 AM and finish at 04:00PM. It will take place at OsloMet (Pilestredet 46, Oslo, Norway). The main focus will be on  ventilation requirements, trends, and quality, moisture and comfort control and kitchen ventilation. Information on registration, programme, speakers etc. will follow soon, so stay tuned.

Favorite venticool newsletter issue #15 – December 2019, now available!

The 15th issue of the venticool newsletter is now available! Specific contents include:

  • Foreword
  • IEA EBC Annex 80 on resilient cooling
  • Feedback from the 40th AIVC & 6th venticool conference: Summary of the ventilative cooling & HVAC track
  • Ongoing standardization projects on ventilative cooling, and natural & hybrid ventilation systems
  • 14 ‐16 September 2020 – 41st AIVC – ASHRAE IAQ & 9th TightVent ‐7th venticool joint conference in Athens, Greece
  • Sustainable Energy for ALL (SEforALL)

To download the newsletter please visit: https://venticool.eu/venticool-publications/newsletters/